Permanent magnet motor and washing machine provided therewith

Details Permanent magnet motor and washing machine provided therewith Permanent magnet motor and washing machine provided therewith

2007-07-31

2007-07-31

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156560, C310S216006

Reexamination Certificate

active

11284924

ABSTRACT:
A permanent magnet motor includes a rotor core having magnetic pole faces including first to third faces. The first face is formed on a peripherally central part and has a peripherally uniform width of the gap. Each of the second and third faces is formed on both peripheral ends respectively and has a width of a gap rendered larger as each of the second and third faces comes close to a boundary between magnetic poles. The first face ranges from ±15 degrees to ±35 degrees in electrical angle about a center of the magnetic pole and has such a circular arc shape that the gap width is increased by about 10% relative to a minimum gap width.

REFERENCES:
patent: 6257027 (2001-07-01), Imai
patent: 6452302 (2002-09-01), Tajima et al.
patent: 2004-254403 (2004-09-01), None

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